A study of the temperature characteristics of vibration mode axes for vibratory cylinder gyroscopes.
A study of the temperature characteristics of vibration mode axes for vibratory cylinder gyroscopes.
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DOI：
10.3390/s110807665
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Wu X
中科院分区：
文献类型：
--
作者：
Wu Y;Xi X;Tao Y;Wu X;Wu X
零偏稳定性是振动圆柱陀螺仪的重要性能参数，对温度变化非常敏感。认为温度的变化使振动模态轴不稳定，对零偏稳定性有显著影响。本文将对这一问题进行详细的研究。首先，分析了振动模态轴的角度位置与零偏之间的关系。其次，利用ANSYS软件建立了存在质量不平衡、频裂、几何误差等缺陷的圆柱谐振器的热模态模型；仿真结果表明，随着温度的升高，振动模态轴的角度位置发生明显变化，导致了剧烈的零偏漂移。最后，详细分析了频率分裂、几何误差、热弹性模量系数（TEMC）和热膨胀系数（TEC）等影响振型轴角位置稳定性的主要因素。本文的仿真结果将有助于深入理解振动圆柱陀螺仪的温度零偏漂移原理，也有助于进一步的温度补偿或控制。
The zero bias stability, which is an important performance parameter for vibratory cylinder gyroscopes, is high sensitive to temperature change. It is considered that the varying temperature makes the vibration mode axes unstable, which has significant influence on the zero bias stability. This paper will investigate this problem in detail. First, the relationships between the angular positions of vibration mode axes and the zero bias are analyzed. Secondly, the thermal-modal model of the cylinder resonator with several defects such as mass imbalance, frequency split (FS), and geometry errors are developed by ANSYS. Simulation results show that with the increase of temperature, angular positions of the vibration mode axes obviously change, which leads to a dramatic zero bias drift. Finally, several major influence factors on the angular position stability of vibration mode axes, including frequency split, geometry errors, thermal elastic modulus coefficient (TEMC) and thermal expansion coefficient (TEC) are analyzed in detail. Simulation results in this paper will be helpful for deep understanding of the drift principle of zero bias induced by temperature for vibratory cylinder gyroscopes and also be helpful for further temperature compensation or control.
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影响因子：
0.8
作者：
Wu, L. F.;Zhang, F. X.
通讯作者：
Zhang, F. X.
影响因子：
0.9
作者：
Singh, A. K.
通讯作者：
Singh, A. K.
影响因子：
4.7
作者：
Rourke, AK;McWilliam, S;Fox, CHJ
通讯作者：
Fox, CHJ
影响因子：
4.7
作者：
Bisegna, Paolo;Caruso, Giovanni
通讯作者：
Caruso, Giovanni
DOI：
10.1243/pime_proc_1986_200_128_02
发表时间：
1986-01-01
影响因子：
2
作者：
BURDESS, JS
通讯作者：
BURDESS, JS